Function removeTagFromConversations

removeTagFromConversations(
tagId: string,
conversations: IConversationIdentifier[],
): Promise<RCResult<void>>
从多个会话中删除指定的标签
Parameters
- tagId: string
  标签 ID
- conversations: IConversationIdentifier[]
  会话信息列表
Returns Promise<RCResult<void>>
Description
从多个会话中删除指定的标签，此操作仅解除会话与标签的关系，并不会删除会话数据
Example: 从多个会话中删除指定的标签示例：
```
const tagId = 'tagId';
const conversations = [{
 conversationType: RongIMLib.ConversationType.PRIVATE,
 targetId: 'targetId',
}];
const res = await RongIMLib.removeTagFromConversations(tagId, conversations);
console.log('从多个会话中删除指定的标签：', res);
```